22690-AA001 upstream oxygen sensor is mounted in front of three-way catalytic converter. It detects oxygen concentration in exhaust gas and feeds data to engine ECU to dynamically adjust fuel injection volume.
Adopts reliable zirconia sensing chip, fast signal response, stable performance under continuous high temperature exhaust environment. Heat-resistant shell and anti-corrosion protective structure prolong service life.
Failed oxygen sensor will trigger engine malfunction indicator light, cause unstable idle speed, higher fuel consumption, weak acceleration and fail emission inspection.
All sensors undergo signal calibration and high temperature aging testing, strictly manufactured following OEM thread, cable length and connector standards. Perfect replacement for exhaust system maintenance.
